20th Century Panties

The magician displays two red silk handkerchiefs, knots them together at the corners and asks a female spectator to place the knotted portion inside her waistband of her slacks, making sure it doesn't fall. The magician then displays a third, different colored silk and makes it magically disappear, announcing that it will reappear tied between the two knotted silks. But, when the magician steps behind the spectator, grabs the hanging ends of the silks and pulls them out of the spectator's waistband a pair of panties appears tied between them! A big surprise and many laughs are guaranteed!